5. suppose you choose a marble from a bag containing 3 red
marbles, and 5 blue marbles. you return the first marble to
choose again. find p(red then blue).
a
6
15
121
c
8

15/64

Step-by-step explanation:

Given

Red, R : 3 marbles

Blue, B : 5 marbles

Total : 5+3=8 marbles

If first marble is returned

P(Red) = 3/8

P(Blue) = 5/8

P (Red then Blue) = 3/8 x 5/8 = 15/64